• Title/Summary/Keyword: reduction strategies

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Innovative Nuclear Power Plant Building Arrangement in Consideration of Decommissioning

  • Choi, Won-Jun;Roh, Myung-Sub;Kim, Chang-Lak
    • Nuclear Engineering and Technology
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    • v.49 no.3
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    • pp.525-533
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    • 2017
  • A new concept termed the Innovative Nuclear Power Plant Building Arrangement (INBA) strategy is a new nuclear power plant building arrangement method which encompasses upfront consideration of more efficient decommissioning. Although existing decommissioning strategies such as immediate dismantling and differed dismantling has the advantage of either early site restoration or radioactive decommissioning waste reduction, the INBA strategy has the advantages of both strategies. In this research paper, the concept and the implementation method of the INBA strategy will be described. Two primary benefits will be further described: (1) early site restoration; and (2) radioactive waste reduction. Several other potential benefits will also be identified. For the estimation of economic benefit, the INBA strategy, with two primary benefits, will be compared with the immediate dismantling strategy. The effect of a short life cycle nuclear power plant in combination with the INBA strategy will be reviewed. Finally, some of the major impediments to the realization of this strategy will be discussed.

Strategies for International Aviation to Respond to Climate Change (국제민간항공분야의 기후변화 대응 전략 연구)

  • Yoo, Kwang Eui
    • Journal of Climate Change Research
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    • v.9 no.4
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    • pp.313-318
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    • 2018
  • The growth rate of international aviation is expected to be higher than that of most industries and the proportion of carbon emissions from the aviation industry will become very significant as the year 2050 approaches. Constraining the growth of this industry is not desirable because it is essential for human welfare as well as the development of related industries. However, reduction of carbon due to aviation is not easy because it is difficult to improve fuel efficiency in a significant way. The ICAO (International Civil Aviation Organization), which is the main organization responsible for handling this problem, developed a program named CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation). The present study analyzes various strategies for countries and airlines to comply with CORSIA using a fuel-efficient system. We conclude that countries should improve their airspace utilization systems, airport facilities, and air navigation systems. Additionally, based on the results of a flight data analysis, airlines should improve their operational efficiency in terms of operations control, flight operation, and maintenance management.

Novel Therapeutic Approaches to Mucopolysaccharidosis Type III

  • Yang, Aram
    • Journal of mucopolysaccharidosis and rare diseases
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    • v.5 no.1
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    • pp.22-28
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    • 2021
  • Mucopolysaccharidosis type III (MPS III) or Sanfilippo disease is an orphan-inherited lysosomal storage disease. It is one of the most common MPS subtypes. The classical presentation is an infantile-onset neurodegenerative disease characterized by intellectual regression, behavioral and sleep disturbances, loss of ambulation, and early death. Unlike other MPS, no disease-modifying therapy has been approved. Here, we review the curative therapy developed for MPS III, from historically ineffective hematopoietic stem cell transplantation and substrate reduction therapy to the promising enzyme replacement therapy or adeno-associated/lentiviral vector-mediated gene therapy. Preclinical studies are presented with recent translational first-in-man trials. We also present experimental research with preclinical mRNA and gene-editing strategies. Lessons from animal studies and clinical trials have highlighted the importance of early therapy before extensive neuronal loss. Disease-modifying therapy for MPS III will likely mandate the development of new early diagnosis strategies.

An Analysis on the Ancillary Benefit of Greenhouse Gases Reduction in Korea

  • Yanghoon Song;Han, Wha-Jin
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.E1
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    • pp.41-50
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    • 2003
  • Greenhouse gases (GHG) could lead to global warming, which may bring about various disturbances to global ecosystem. Other than primary benefits that are too extensive, the ancillary benefit from GHG reduction has been estimated to provide justification for national actions. Five scenarios for 5 to 40% reduction of GHG were evaluated for the benefit/cost efficiency, using the cost estimates from a previous study. Their benefits were also estimated using a European model. As a result of this study, it can be concluded that lower reduction scenarios (5∼10%) seem to be more efficient than higher reduction scenarios (30∼40%).

State-of-practice and State-of-Art for the Project Cycle Time Reduction

  • Hong, Tae Hoon
    • Architectural research
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    • v.7 no.2
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    • pp.69-79
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    • 2005
  • There are no formal decision tools or guidelines to assist owners and contractors in choosing delivery systems and project strategies that would allow for a radical reduction in project cycle time - from the preplanning phase through project start up. Therefore, it is important to identify the state-of-practice and the state-of-art on methods of achieving radical reduction defined as a reduction of 25% or more in overall project cycle time. A comprehensive literature review, three questionnaire surveys, and the seven case studies were conducted and the data obtained from them were analyzed to establish the state-of-practice and state-of-art for project cycle time reduction techniques.

A Study on NOx Reduction Efficiency according to Various Injectors used for De-NOx System (흡장형 De-NOx 촉매(LNT) 시스템의 환원제 분무용 인젝터 종류에 따른 NOx저감효율 연구)

  • Han, Young-Deok;Oh, Jung-Mo;Lee, Ki-Hyung;Lee, Jin-Ha;Mun, Woong-Ki
    • Transactions of the Korean Society of Automotive Engineers
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    • v.19 no.1
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    • pp.117-124
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    • 2011
  • Automotive engines require strategies to fulfill the emission regulations in terms of NOx and PM. A dramatic reduction in NOx and PM emissions could be achieved with high pressure injection, innovative combustion strategies and EGR. Recently, Lean NOx Trap (LNT) and Urea-SCR are considered as more practical strategy to suppress the engine-out emissions substantially for copying with severe regulation. These systems need to reduce the reducing agent injection system which has a huge impact on NOx purification efficiency. In this paper, different three injectors have been used to investigate spray characteristics and engine emission test was conducted to clarify the effect of these injectors on the NOx reduction.

Emerging Innovations to Reduce the Salt Content in Cheese; Effects of Salt on Flavor, Texture, and Shelf Life of Cheese; and Current Salt Usage: A Review

  • Bae, Inhyu;Park, Jong-Hyun;Choi, Hee-Young;Jung, Hoo-Kil
    • Food Science of Animal Resources
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    • v.37 no.6
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    • pp.793-798
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    • 2017
  • Salt is an essential ingredient for cheese production, and it influences various aspects of cheese, including the shelf life, enzyme activity, flavor, casein hydration, and microbial proliferation during ripening. Several consumers avoid cheese with high salt content, mainly due to health problems such as hypertension, cardiovascular disease (CVD), stroke, and heart attacks. Salt has been commonly used for several purposes in cheese production, including for obtaining the required flavor and texture, for its preservative properties, and as a taste enhancer. However, salt usage has been opposed by the public and governmental bodies, who have been advised by health authorities that salt should be reduced or avoided in cheese for healthier life. However, salt replacement or reduction in cheese manufacturing requires formulation of intensive strategies. This review provides information about several strategies and innovations for reduction and replacement of salt in cheese manufacturing without seriously affecting the quality, microbial safety, and sensory properties of cheeses.

Development and the Application of Flood Disaster Risk Reduction Index (홍수피해저감지수(FDRRI) 개발 및 시범적용)

  • Moon, Seung-Rok;Yang, Seung-Man;Choi, Seon-Hwa
    • Journal of the Korean Society of Safety
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    • v.29 no.1
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    • pp.64-69
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    • 2014
  • Community-based disaster preparedness approaches are increasingly important elements of vulnerability reduction and disaster strategies. They are associated with a policy trend that values the knowledge and capacities of local people. In this research, we describe the community diagnosis method and develop Flood Disaster Risk Reduction Index(FDRRI) for assessment of flood vulnerability. FDRRI is composed of four indicators such as Flood Exposure Indicator(FEI), Sensitivity Indicator(SI), Risk Reduction Indicator(RRI), and Community Preparedness Indicator(CPI). We anticipate to present the guideline for selection national preparedness projects and uplift community's preparedness capacity.

The Effects of Corporate Insolvency Cause on Turnaround Strategies and Turnaround Performance (기업부실 원인이 회생전략과 회생성과에 미치는 영향)

  • Song, Sin-Geun;Shin, Sung-Wook;Park, Chang-June
    • Management & Information Systems Review
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    • v.34 no.1
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    • pp.211-225
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    • 2015
  • This paper investigate the impact of insolvency cause(internal insolvency cause, external insolvency cause) on firms' turnaround strategies(strategy of improving efficiency, strategy of creating revenue) and examines the impact of firms' turnaround strategies on firms' turnaround performance(debt ratio, sales growth ratio). For this study, a survey was conducted among administrative assistants and four hypotheses were verified. The findings of this research are summarized as follows: First, internal insolvency cause had a positive effect on strategy of Improving efficiency(expense reduction, asset reduction), but external insolvency cause had a positive effect on strategy of creating revenue(product/service reduction, product/service expansion). Second, strategy of improving efficiency positively effect on decreasing debt ratio, but strategy of creating revenue positively effect on the sales growth ratio. These results show that turnaround strategies different across the corporate insolvent cause, and turnaround performance also different across the corporate turnaround strategy.

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